Players have different inventories / physical location in the world depending on if online-mode=true OR online-mode=false

When logging onto my online server Player's have different inventories / world coordinates depending on if the server is set to online-mode=true OR online-mode=false.

Additionally; I have noticed that the /op online-mode=true/false has been updated to resolved (Works As Intended) Will there be a migration step that will update servers that where in offline mode such that the inventories of players and their positions in the world will be ported to the new "functionality" of online-mode=true? Just hoping